Reply to Best way to insulate 100 year old unfinished attic ceiling?

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Reply to "Best way to insulate 100 year old unfinished attic ceiling?"

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]
We have a HVAC unit that provides AC to our upstairs located in the attic.

old insulation that looked to be like finely shredded paper.  There were a lot of moths in there and moth larvae on the exposed rafters. The contractor removed the insulation.  We think it might have been original to the house as there were generally very few updates throughout.

Is blown in cellulose the way to go?  
[/quote]

First of all, having an AC unit in the attic is horrible for moisture disaster issues, though that's a whole other project and big money to fix.

So the insulation that looks like shredded paper is called "cellulose" insulation, and it is made of, wait for it, shredded paper. Very cheap and poor quality insulation, but "green" aka a scam mostly. You will spend more in utility bills from its lower rating so it is not green at all.

Cellulose insulation also is a prime mold growth medium and attracts insects, as you have found out.

Fiberglass is what you seek. Blown in is cheaper and easier to do, batting is better and more costly, doing both is best.

[/quote]

Agree with everything but the conclusion (Rockwool beats fiberglass in every way) and would add don’t fall for borate treated cellulose either.

[/quote]

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